Scientific Linux Security Update : ruby on SL5.x i386/x86_64

2013-01-17T00:00:00
ID SL_20130108_RUBY_ON_SL5_X.NASL
Type nessus
Reporter Tenable
Modified 2018-12-31T00:00:00

Description

It was found that certain methods did not sanitize file names before passing them to lower layer routines in Ruby. If a Ruby application created files with names based on untrusted input, it could result in the creation of files with different names than expected. (CVE-2012-4522)

It was found that the SLSA-2011:0909 update did not correctly fix the CVE-2011-1005 issue, a flaw in the method for translating an exception message into a string in the Exception class. A remote attacker could use this flaw to bypass safe level 4 restrictions, allowing untrusted (tainted) code to modify arbitrary, trusted (untainted) strings, which safe level 4 restrictions would otherwise prevent. (CVE-2012-4481)

This update also fixes the following bug :

  • Prior to this update, the 'rb_syck_mktime' option could, under certain circumstances, terminate with a segmentation fault when installing libraries with certain gems. This update modifies the underlying code so that Ruby gems can be installed as expected.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(63603);
  script_version("1.2");
  script_cvs_date("Date: 2018/12/31 11:35:01");

  script_cve_id("CVE-2011-1005", "CVE-2012-4481", "CVE-2012-4522");

  script_name(english:"Scientific Linux Security Update : ruby on SL5.x i386/x86_64");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was found that certain methods did not sanitize file names before
passing them to lower layer routines in Ruby. If a Ruby application
created files with names based on untrusted input, it could result in
the creation of files with different names than expected.
(CVE-2012-4522)

It was found that the SLSA-2011:0909 update did not correctly fix the
CVE-2011-1005 issue, a flaw in the method for translating an exception
message into a string in the Exception class. A remote attacker could
use this flaw to bypass safe level 4 restrictions, allowing untrusted
(tainted) code to modify arbitrary, trusted (untainted) strings, which
safe level 4 restrictions would otherwise prevent. (CVE-2012-4481)

This update also fixes the following bug :

  - Prior to this update, the 'rb_syck_mktime' option could,
    under certain circumstances, terminate with a
    segmentation fault when installing libraries with
    certain gems. This update modifies the underlying code
    so that Ruby gems can be installed as expected."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1301&L=scientific-linux-errata&T=0&P=1828
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f3bfc260"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/01/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);


flag = 0;
if (rpm_check(release:"SL5", reference:"ruby-1.8.5-27.el5")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-debuginfo-1.8.5-27.el5")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-devel-1.8.5-27.el5")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-docs-1.8.5-27.el5")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-irb-1.8.5-27.el5")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-libs-1.8.5-27.el5")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-mode-1.8.5-27.el5")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-rdoc-1.8.5-27.el5")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-ri-1.8.5-27.el5")) flag++;
if (rpm_check(release:"SL5", reference:"ruby-tcltk-1.8.5-27.el5")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");